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Steel 12DKHN1MFL

Designation

Name The value
Designation GOST Cyrillic 12ДХН1МФЛ
Designation GOST Latin 12DXH1MFL
Transliteration 12DHN1MFL
The chemical elements 12CuCrН1MoV

Description

12DKHN1MFL steel is used: for the manufacture of litho-welded structures, castings for critical loaded parts, which are requirements of sufficient strength and toughness, working under static and dynamic loads.

Standards

Name Code Standards
Castings, steel В82 GOST 977-88, OST 3-4365-79

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Mo
GOST 977-88 0.1-0.18 ≤0.03 ≤0.03 0.3-0.55 1.2-1.7 0.2-0.4 1.4-1.8 The rest 0.4-0.65 0.08-0.15 0.2-0.3
Fe is the basis.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Hardening in air, 890-910 °C + vacation at 520-630 °C, air cooling
100 ≥735 ≥981 ≥10 ≥20 ≥294 -
Normalization at 940-960 °C, air cooling or Normalizing at 890-910 °C + vacation at 520-630 °C, air cooling
100 ≥638 ≥785 ≥12 ≥20 ≥294 217-269

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

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